History of Public Toilets - Historical account on the role of water closets (toilets) and sewage treatment in human hygiene, from Babylon to modern times. www.plumbingworld.com/toilethistoryindia.html
Lynn Wastewater Treatment Plant History - History of wastewater treatment in Lynn, Massachusetts, where wastewater collection began in 1866 with the construction of a stone and brick sewer in Union street. members.aol.com/erikschiff/history1.htm
